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1-2 1.1 C51/C251 Support ....................................................................................1-2 1.2 Demo Board Features...............................................................................1-3 Section 2 Hardware Description ........................................................................... 2-4 2.1 Block Diagram...........................................................................................2-4 2.2 Specifications............................................................................................2-4 2.3 Supported Microcontrollers .......................................................................2-4 2.4 Board Supply Considerations....................................................................2-5 2.5 Board Layout.............................................................................................2-6 2.6 J11 Switches.............................................................................................2-7 Section 3 Operation Mode .................................................................................. 3-10 3.1 Flash Products ........................................................................................3-10 3.1.1 Switch Configuration.........................................................................3-10 3.1.2 Running ISP .....................................................................................3-10 3.2 ISP External Flash Memory Mode ..........................................................3-11 3.2.1 Hardware Configuration....................................................................3-11 3.2.2 Terminal Configuration .....................................................................3-11 3.2.3 ISP Operation ...................................................................................3-11 3.3 Demo Mode ............................................................................................3-14 3.3.1 C51 Mode .........................................................................................3-14 3.3.2 C251 Mode .......................................................................................3-15 Section 4 Bill of Material ..................................................................................... 4-16 Section 5 Schematics .........................................................................................5-18 C51 Microcontrollers Demo Board User Guide 4119C–8051–3/03 Introduction Introduction Introduction The C51/C251 Demo Board allows easy evaluation of most of Atmel C51/C251 devices. The C51/C251 Demo Board can be powered using a simple 9V battery or using a 9V rechargeable battery. The C51/C251 Demo Board can also be used as programming tool for Flash products. 1.1 Package . One PCB C51/C251 Demo Board (with battery connector) Contents . One Serial cable (1.8m length) Figure 1-1. C51/C251 Demo Board 1.2 On-line Utilities The following utilies involved in using the C51/C251 Demo Board are available on the Atmel Web site Search for DEMOBOARD1. . FLIP: In-System Programming (ISP) software for Flash microcontrollers . ISP Demo Board Source and Code to program external Flash memory . Source and Code of demo software C51 Microcontrollers Demo Board User Guide 4119C–8051–3/03 Introduction Introduction Support Questions can be sent to: mcu@atmel.com 1.4 Demo Board Features . An LCD Display (2 lines of 16 characters) . An Eight LED Bar Graph . 128 KB Flash Memory . Three Different Sockets: PLCC44, PLCC68 & DIL24 . In-System Programming (ISP) Software to Download HEX Files in Flash Memory . Hardware Capability to Program the Microcontrollers On-Chip Flash Memory . Extension Connectors for Special Features, Applications, New Products, or Demos C51 Microcontrollers Demo Board User Guide 4119C–8051–3/03 Hardware Description Hardware Description Hardware Description 2.1 Block Diagram Figure 2-1. Block Diagram RS232 C51/C251 LCD 2*16 Bargraph Synchro connectors Reset & INT1# Glue Extensions connector 128 K Flash memory Config switches To All Power interface 2.2 Specifications Parameter Typ Max Unit Supply DC voltage 9 12 V Supply DC current 200 mA Consumption at 12 MHz 60 100 mA Consumption at 60 MHz in X2 mode 110 150 mA non-rechargeable battery capacity 550 mAh Rechargeable battery capacity 150 mAh 2.3 Supported Most Atmel C51 and C251 microcontrollers are supported. Microcontrollers The Demo Board does not support low voltage parts, only 5V parts are supported. C51 Microcontrollers Demo Board User Guide 2-4 4119C–8051–3/03 Hardware Description Hardware Description Board Supply • Power connector J1 or battery connector J2 may be used to power the board. Considerations • On J2 connector a rechargeable battery or a non-rechargeable battery may be used. • In case of rechargeable battery usage on J2, if J18 is ON the battery is charged when the board is powered by J1. • Board may be powered by J2 for about 10 hours with one new non-rechargeable battery...